Date Added: Oct 2011
Collaborative mechanisms between services are a crucial aspect in the recent development of pervasive computing systems based on the paradigm of service-oriented architecture. Currently, trends in development of services computing are taking into account new high-level interaction models founded on services composition. These services make up their functionalities with the objective of creating smart spaces in which services with different purposes can collaborate to offer new and more complex functionalities to the user transparently. This leads to the creation of collaborative spaces with value-added services derived from the composition of existing ones.